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#3346016 - 04/17/14 09:41 PM Re: Dielectric grease or something else? [Re: JHZR2]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 687
Loc: New Zealand
Well, it simply excludes oxygen from the connection slowing down microscopic electrolytic corrosion. For people with VW TDIs it was a good fix for driveability issues when used on the MAF connector, which had different metals each side.

I also use a tiny amount on every electrical connector, the only time it's given me grief is when I used it on an HDMI connector.

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#3346103 - 04/17/14 11:31 PM Re: Dielectric grease or something else? [Re: Kiwi_ME]
friendly_jacek Offline


Registered: 05/04/03
Posts: 5343
Loc: southeast US
I understand that, but how does it explain instant results?

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#3346105 - 04/17/14 11:35 PM Re: Dielectric grease or something else? [Re: JHZR2]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 687
Loc: New Zealand
Because the connection must have been corroded.

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#3346853 - 04/18/14 07:28 PM Re: Dielectric grease or something else? [Re: friendly_jacek]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 687
Loc: New Zealand
Originally Posted By: friendly_jacek
I understand that, but how does it explain instant results?


Hmm, overnight I realized that you may not know that almost all electrical connectors are design to wipe the contacts clean on insertion. Any slight resistance that develops can causes galvanic corrosion at a microscopic level and small currents from certain types of sensors will not break through that.
In addition all underhood connectors should ideally be watertight, although you will find that those under covers carrying higher currents (fuses, relays, lighting) are not.

IMHO, connector design is one of the main drivers determining historic reliability of vehicle brands and is one reason why Japanese cars got better first. The legendary Mercedes W123 of the '70s-'80s used silver plated connectors with a heavy, sticky grease to seal them (throughout the vehicle,) while BMW only took care on critical components (ECU, TCM and ABS) and used relatively low-quality connectors on non-critical systems such as AC, window and power seat controls. Saab, Alfa and other Euro brands were similar.

I have a saying that "every electrical problem is a mechanical problem," and that is because the root cause of many failures in electrical systems is poor mechanical design, a result of the failure of the EEs to always select components appropriate to the environmental conditions, or appreciate the benefit of passing that responsibility off to the MEs.

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#3352743 - 04/25/14 11:16 AM Re: Dielectric grease or something else? [Re: Kiwi_ME]
friendly_jacek Offline


Registered: 05/04/03
Posts: 5343
Loc: southeast US
Originally Posted By: Kiwi_ME
Originally Posted By: friendly_jacek
I understand that, but how does it explain instant results?


Hmm, overnight I realized that you may not know that almost all electrical connectors are design to wipe the contacts clean on insertion.


OK, are you saying DG helps to wipe the corroded surface on the metallic pins/contacts?

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#3382437 - 05/27/14 08:13 PM Re: Dielectric grease or something else? [Re: JHZR2]
andyd Offline


Registered: 09/25/04
Posts: 3799
Loc: Marshfield , MA
Just exercising the connection will clean it . Or if you have a dab of De-oxit use that to clean connections.DG runs from vaseline to more exotics with silicone in them. It is used to stop corrosion by being air tight.Making the connection will displace it to make contact. After having to scramble to find a Jeep V8 wire set during a simple plug change. I use boot grease every time I mess with the plugs now.

When I finished with the new brake lines and bleeders on the Rat, I hit the fittings with chassis lube anything with threads, got greased. Same principle.
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#3382562 - 05/27/14 10:25 PM Re: Dielectric grease or something else? [Re: JHZR2]
AMC Offline


Registered: 10/17/10
Posts: 383
Loc: South Eastern, CT
I too put Dielectric Grease on everything including bulb bases, connectors, plugs and battery terminals. I recently ran out of my regular CRC dielectric grease and have been trying Liquid Wrench Dielectric anti-size. So far I am liking it and finding it very versatile. I dont use it in place of actual anti-seize compound but it is nice to know that it will function as an anti-sieze as well.

It is good stuff, easily available at your local Lowes store. Check it out: http://www.lowes.com/pd_549792-1409-L803_0__
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#3383243 - 05/28/14 03:55 PM Re: Dielectric grease or something else? [Re: JHZR2]
yvon_la Offline


Registered: 05/20/14
Posts: 740
Loc: quebec canada
best is probably Allison atf fluid since it is tested for 300 hours for corrosion on copper but I doubt you ll find that avail in quar4ts since it is for big rig!
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#3383259 - 05/28/14 04:21 PM Re: Dielectric grease or something else? [Re: JHZR2]
JHZR2 Offline



Registered: 12/14/02
Posts: 33778
Loc: New Jersey
Dont think that would serve as grease very well...

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#3392109 - 06/08/14 11:01 AM Re: Dielectric grease or something else? [Re: JHZR2]
Raybo Offline


Registered: 02/14/09
Posts: 55
Loc: Clearwater ,Florida
I use this stuff. Been using it for years on C Band Satellite RF connectors. Fill them up and connect them Repel water and will not corrode. It lasts for years and has the best anti corrosion there is. Best electrical grease there is 100% synthetic & so pure you could eat it.

If you want something quicker Home Dep0t sells a great product called CSP (corrosion stop proetcetor) Excellent spray product. Its spray grease and does not smell and stays where you spray it and repels water. Hose off my suspension for years now with this stuff snd no under carriage rust. No squeeks or rattles. Door hinges, hatch hinges, locks,latches. Very good stuff. Made by PB Blaster.

http://www.redlineoil.com/product.aspx?pid=82&pcid=17

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#3392276 - 06/08/14 03:19 PM Re: Dielectric grease or something else? [Re: JHZR2]
HosteenJorje Offline


Registered: 05/26/14
Posts: 199
Loc: Columbus,Nebraska
CRC makes,or did make, an excellent aerosol dielectric grease, but I haven't seen it on the shelf lately.Very good for sealing all electrical connections on automobiles.A little pricey.

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#3414976 - 07/05/14 02:43 AM Re: Dielectric grease or something else? [Re: JHZR2]
oilboy123 Offline


Registered: 12/05/03
Posts: 6578
Loc: Everett, Washington
I like dielectric grease myself.

This is a good product as well. I have used it on volume controls of radios and such. Went from static/scratch sound to normal volume control. I have also used it on slider controls where the signal was intermittent through the travel. Use it on computer ram connectors as well.

It is pricy, but a little tiny bottle will last forever because it goes on thin.....

http://stabilant.com/techt02h.htm


Edited by oilboy123 (07/05/14 02:43 AM)
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#3429518 - 07/19/14 07:10 PM Re: Dielectric grease or something else? [Re: JHZR2]
alternety Offline


Registered: 01/15/09
Posts: 148
Loc: Pacific NW
I don't think Stabilant should be viewed as a dielectric grease. The mechanism is completely different. According to the manufacturer, it forms a thin coating that becomes conductive where pressure points occur but insulates and protects everywhere else. Attributed to a unique molecular structure. I am not sure adding grease to this would be useful. But I would like to know. Grease blocks evil things, and is wiped clean at the contact points when inserting connectors. Stabilant, provides a thin protective coating but improves contact resistance. According to the manufacturer.

I have used the product for a long time and it seems to work quite well. It saved me the cost of major transmission and on-board computer replacement or work. I regularly treat connectors in my equipment before putting them into operation.

I would rate it as good stuff.

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